Warning: Permanently added '10.128.15.202' (ECDSA) to the list of known hosts. 2019/10/26 06:57:11 fuzzer started 2019/10/26 06:57:16 dialing manager at 10.128.0.26:40341 2019/10/26 06:57:16 syscalls: 2424 2019/10/26 06:57:16 code coverage: enabled 2019/10/26 06:57:16 comparison tracing: CONFIG_KCOV_ENABLE_COMPARISONS is not enabled 2019/10/26 06:57:16 extra coverage: enabled 2019/10/26 06:57:16 setuid sandbox: enabled 2019/10/26 06:57:16 namespace sandbox: enabled 2019/10/26 06:57:16 Android sandbox: /sys/fs/selinux/policy does not exist 2019/10/26 06:57:16 fault injection: enabled 2019/10/26 06:57:16 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/10/26 06:57:16 net packet injection: enabled 2019/10/26 06:57:16 net device setup: enabled 2019/10/26 06:57:16 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist [ 157.748224][T11514] ===================================================== [ 157.755246][T11514] BUG: KMSAN: use-after-free in kmem_cache_free+0x3df/0x2b70 [ 157.762625][T11514] CPU: 0 PID: 11514 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 157.770161][T11514] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 157.780283][T11514] Call Trace: [ 157.783599][T11514] dump_stack+0x191/0x1f0 [ 157.787937][T11514] kmsan_report+0x128/0x220 [ 157.792576][T11514] __msan_warning+0x73/0xe0 [ 157.797061][T11514] kmem_cache_free+0x3df/0x2b70 [ 157.801890][T11514] ? kmsan_internal_set_origin+0x6a/0xb0 [ 157.807544][T11514] ? kfree_skb+0x473/0x4c0 [ 157.812006][T11514] ? kmsan_internal_unpoison_shadow+0x42/0x80 [ 157.818106][T11514] kfree_skb+0x473/0x4c0 [ 157.822370][T11514] ? packet_rcv_spkt+0x68d/0x7c0 [ 157.827289][T11514] packet_rcv_spkt+0x68d/0x7c0 [ 157.832043][T11514] ? packet_rcv+0x2110/0x2110 [ 157.836695][T11514] dev_queue_xmit_nit+0x1125/0x1200 [ 157.841881][T11514] dev_hard_start_xmit+0x21e/0xab0 [ 157.846976][T11514] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 157.853027][T11514] sch_direct_xmit+0x56c/0x18c0 [ 157.857864][T11514] __dev_queue_xmit+0x212d/0x4200 [ 157.862889][T11514] dev_queue_xmit+0x4b/0x60 [ 157.867372][T11514] ip_finish_output2+0x20d6/0x25d0 [ 157.872462][T11514] ? __msan_metadata_ptr_for_load_2+0x10/0x20 [ 157.878517][T11514] ? nf_ct_deliver_cached_events+0x4d5/0x6e0 [ 157.884497][T11514] __ip_finish_output+0xaf8/0xda0 [ 157.889529][T11514] ip_finish_output+0x2db/0x420 [ 157.894448][T11514] ip_output+0x541/0x610 [ 157.898683][T11514] ? ip_mc_finish_output+0x6d0/0x6d0 [ 157.903945][T11514] ? ip_finish_output+0x420/0x420 [ 157.908960][T11514] __ip_queue_xmit+0x1caf/0x21f0 [ 157.913873][T11514] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 157.919745][T11514] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 157.925810][T11514] ? should_fail+0x1d2/0xa50 [ 157.930401][T11514] ip_queue_xmit+0xcc/0xf0 [ 157.934800][T11514] ? tcp_v4_inbound_md5_hash+0xd10/0xd10 [ 157.940420][T11514] __tcp_transmit_skb+0x40e3/0x5d90 [ 157.945632][T11514] __tcp_send_ack+0x701/0x840 [ 157.950294][T11514] tcp_send_ack+0x68/0x90 [ 157.954785][T11514] tcp_cleanup_rbuf+0x764/0x800 [ 157.959621][T11514] tcp_recvmsg+0x334d/0x4ff0 [ 157.964220][T11514] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 157.970090][T11514] ? tcp_mmap+0x150/0x150 [ 157.974394][T11514] ? tcp_mmap+0x150/0x150 [ 157.978714][T11514] inet_recvmsg+0x237/0x7d0 [ 157.983200][T11514] ? inet_sendpage+0x2c0/0x2c0 [ 157.987940][T11514] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 157.993822][T11514] ? inet_sendpage+0x2c0/0x2c0 [ 157.998564][T11514] ? inet_sendpage+0x2c0/0x2c0 [ 158.003320][T11514] sock_read_iter+0x5be/0x660 [ 158.007995][T11514] ? kernel_sock_ip_overhead+0x340/0x340 [ 158.013879][T11514] __vfs_read+0xa67/0xc90 [ 158.018382][T11514] vfs_read+0x359/0x6f0 [ 158.022522][T11514] ksys_read+0x265/0x430 [ 158.026748][T11514] __se_sys_read+0x92/0xb0 [ 158.031144][T11514] __x64_sys_read+0x4a/0x70 [ 158.035631][T11514] do_syscall_64+0xb6/0x160 [ 158.040114][T11514] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 158.046000][T11514] RIP: 0033:0x47fd44 [ 158.049876][T11514] Code: ff ff cc cc cc cc e8 9b 40 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 45 31 d2 45 31 c0 45 31 c9 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 158.069470][T11514] RSP: 002b:000000c4203597a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 158.077870][T11514] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fd44 [ 158.085830][T11514] RDX: 0000000000001000 RSI: 000000c4203e4000 RDI: 0000000000000003 [ 158.093803][T11514] RBP: 000000c4203597f0 R08: 0000000000000000 R09: 0000000000000000 [ 158.101755][T11514] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 158.109711][T11514] R13: 0000000000000004 R14: 0000000000000002 R15: ffffffffffffffff [ 158.117676][T11514] [ 158.119991][T11514] Uninit was stored to memory at: [ 158.124995][T11514] kmsan_internal_chain_origin+0xbd/0x180 [ 158.130690][T11514] __msan_chain_origin+0x6b/0xd0 [ 158.135600][T11514] ___slab_alloc+0x1dbc/0x1fb0 [ 158.140358][T11514] kmem_cache_alloc+0xade/0xd10 [ 158.145202][T11514] skb_clone+0x326/0x5d0 [ 158.149431][T11514] dev_queue_xmit_nit+0x539/0x1200 [ 158.154526][T11514] dev_hard_start_xmit+0x21e/0xab0 [ 158.159618][T11514] sch_direct_xmit+0x56c/0x18c0 [ 158.164444][T11514] __dev_queue_xmit+0x212d/0x4200 [ 158.169443][T11514] dev_queue_xmit+0x4b/0x60 [ 158.173928][T11514] ip_finish_output2+0x20d6/0x25d0 [ 158.179014][T11514] __ip_finish_output+0xaf8/0xda0 [ 158.184014][T11514] ip_finish_output+0x2db/0x420 [ 158.188837][T11514] ip_output+0x541/0x610 [ 158.193056][T11514] __ip_queue_xmit+0x1caf/0x21f0 [ 158.197969][T11514] ip_queue_xmit+0xcc/0xf0 [ 158.202375][T11514] __tcp_transmit_skb+0x40e3/0x5d90 [ 158.207567][T11514] __tcp_send_ack+0x701/0x840 [ 158.212229][T11514] tcp_send_ack+0x68/0x90 [ 158.216534][T11514] tcp_cleanup_rbuf+0x764/0x800 [ 158.221358][T11514] tcp_recvmsg+0x334d/0x4ff0 [ 158.225923][T11514] inet_recvmsg+0x237/0x7d0 [ 158.230512][T11514] sock_read_iter+0x5be/0x660 [ 158.235178][T11514] __vfs_read+0xa67/0xc90 [ 158.239505][T11514] vfs_read+0x359/0x6f0 [ 158.243638][T11514] ksys_read+0x265/0x430 [ 158.247855][T11514] __se_sys_read+0x92/0xb0 [ 158.252247][T11514] __x64_sys_read+0x4a/0x70 [ 158.256726][T11514] do_syscall_64+0xb6/0x160 [ 158.261205][T11514] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 158.267066][T11514] [ 158.269370][T11514] Uninit was created at: [ 158.273637][T11514] kmsan_internal_poison_shadow+0x60/0x120 [ 158.279429][T11514] kmsan_slab_free+0x8d/0xf0 [ 158.284007][T11514] kmem_cache_free_bulk+0x3ad9/0x3f10 [ 158.289375][T11514] __kfree_skb_flush+0xb0/0x100 [ 158.294209][T11514] net_rx_action+0x1a5e/0x1aa0 [ 158.298949][T11514] __do_softirq+0x4a1/0x83a [ 158.303431][T11514] irq_exit+0x230/0x280 [ 158.307560][T11514] do_IRQ+0x123/0x360 [ 158.311519][T11514] ret_from_intr+0x0/0x33 [ 158.315840][T11514] default_idle+0x53/0x90 [ 158.320161][T11514] arch_cpu_idle+0x25/0x30 [ 158.324563][T11514] do_idle+0x1d5/0x780 [ 158.328770][T11514] cpu_startup_entry+0x45/0x50 [ 158.333514][T11514] rest_init+0x1be/0x1f0 [ 158.337733][T11514] arch_call_rest_init+0x13/0x15 [ 158.342683][T11514] start_kernel+0x987/0xb57 [ 158.347160][T11514] x86_64_start_reservations+0x18/0x2e [ 158.352595][T11514] x86_64_start_kernel+0x81/0x84 [ 158.357535][T11514] secondary_startup_64+0xa4/0xb0 [ 158.362532][T11514] ===================================================== [ 158.369436][T11514] Disabling lock debugging due to kernel taint [ 158.375562][T11514] Kernel panic - not syncing: panic_on_warn set ... [ 158.382127][T11514] CPU: 0 PID: 11514 Comm: syz-fuzzer Tainted: G B 5.4.0-rc3+ #0 [ 158.391033][T11514] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 158.401070][T11514] Call Trace: [ 158.404347][T11514] dump_stack+0x191/0x1f0 [ 158.408674][T11514] panic+0x3c9/0xc1e [ 158.412563][T11514] kmsan_report+0x215/0x220 [ 158.417047][T11514] __msan_warning+0x73/0xe0 [ 158.421528][T11514] kmem_cache_free+0x3df/0x2b70 [ 158.426370][T11514] ? kmsan_internal_set_origin+0x6a/0xb0 [ 158.431981][T11514] ? kfree_skb+0x473/0x4c0 [ 158.436374][T11514] ? kmsan_internal_unpoison_shadow+0x42/0x80 [ 158.442429][T11514] kfree_skb+0x473/0x4c0 [ 158.446663][T11514] ? packet_rcv_spkt+0x68d/0x7c0 [ 158.451643][T11514] packet_rcv_spkt+0x68d/0x7c0 [ 158.456404][T11514] ? packet_rcv+0x2110/0x2110 [ 158.461065][T11514] dev_queue_xmit_nit+0x1125/0x1200 [ 158.466258][T11514] dev_hard_start_xmit+0x21e/0xab0 [ 158.471546][T11514] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 158.477481][T11514] sch_direct_xmit+0x56c/0x18c0 [ 158.482343][T11514] __dev_queue_xmit+0x212d/0x4200 [ 158.487369][T11514] dev_queue_xmit+0x4b/0x60 [ 158.491869][T11514] ip_finish_output2+0x20d6/0x25d0 [ 158.497027][T11514] ? __msan_metadata_ptr_for_load_2+0x10/0x20 [ 158.503076][T11514] ? nf_ct_deliver_cached_events+0x4d5/0x6e0 [ 158.509049][T11514] __ip_finish_output+0xaf8/0xda0 [ 158.514111][T11514] ip_finish_output+0x2db/0x420 [ 158.518950][T11514] ip_output+0x541/0x610 [ 158.523211][T11514] ? ip_mc_finish_output+0x6d0/0x6d0 [ 158.528478][T11514] ? ip_finish_output+0x420/0x420 [ 158.533503][T11514] __ip_queue_xmit+0x1caf/0x21f0 [ 158.538422][T11514] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 158.544296][T11514] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 158.550349][T11514] ? should_fail+0x1d2/0xa50 [ 158.554935][T11514] ip_queue_xmit+0xcc/0xf0 [ 158.559333][T11514] ? tcp_v4_inbound_md5_hash+0xd10/0xd10 [ 158.564952][T11514] __tcp_transmit_skb+0x40e3/0x5d90 [ 158.570148][T11514] __tcp_send_ack+0x701/0x840 [ 158.575256][T11514] tcp_send_ack+0x68/0x90 [ 158.579564][T11514] tcp_cleanup_rbuf+0x764/0x800 [ 158.584397][T11514] tcp_recvmsg+0x334d/0x4ff0 [ 158.588999][T11514] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 158.594879][T11514] ? tcp_mmap+0x150/0x150 [ 158.599198][T11514] ? tcp_mmap+0x150/0x150 [ 158.603504][T11514] inet_recvmsg+0x237/0x7d0 [ 158.607986][T11514] ? inet_sendpage+0x2c0/0x2c0 [ 158.612735][T11514] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 158.618617][T11514] ? inet_sendpage+0x2c0/0x2c0 [ 158.623367][T11514] ? inet_sendpage+0x2c0/0x2c0 [ 158.628121][T11514] sock_read_iter+0x5be/0x660 [ 158.632872][T11514] ? kernel_sock_ip_overhead+0x340/0x340 [ 158.638481][T11514] __vfs_read+0xa67/0xc90 [ 158.642803][T11514] vfs_read+0x359/0x6f0 [ 158.646947][T11514] ksys_read+0x265/0x430 [ 158.651171][T11514] __se_sys_read+0x92/0xb0 [ 158.655568][T11514] __x64_sys_read+0x4a/0x70 [ 158.660066][T11514] do_syscall_64+0xb6/0x160 [ 158.664552][T11514] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 158.670422][T11514] RIP: 0033:0x47fd44 [ 158.674297][T11514] Code: ff ff cc cc cc cc e8 9b 40 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 45 31 d2 45 31 c0 45 31 c9 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 158.693966][T11514] RSP: 002b:000000c4203597a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 158.702354][T11514] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fd44 [ 158.710301][T11514] RDX: 0000000000001000 RSI: 000000c4203e4000 RDI: 0000000000000003 [ 158.718261][T11514] RBP: 000000c4203597f0 R08: 0000000000000000 R09: 0000000000000000 [ 158.726210][T11514] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 158.734246][T11514] R13: 0000000000000004 R14: 0000000000000002 R15: ffffffffffffffff [ 158.743612][T11514] Kernel Offset: disabled [ 158.747941][T11514] Rebooting in 86400 seconds..